Measuring the illicit cigarette market in the absence of pack security features: a case study of South Africa
Sign Up to like & getrecommendations! Published in 2021 at "Tobacco Control"
DOI: 10.1136/tobaccocontrol-2020-056117
Abstract: There are several ways to measure the illicit cigarette market. In South Africa, different methods were used to triangulate results. The aim of this paper is to assist researchers to decide which method is most… read more here.
Keywords: security features; south africa; illicit cigarette; method ... See more keywords
Reversible decryption of covert nanometer-thick patterns in modular metamaterials.
Sign Up to like & getrecommendations! Published in 2019 at "Optics letters"
DOI: 10.1364/ol.44.004507
Abstract: Continuous development of security features is mandatory for the fight against forgery of valuable documents and products, the most notable example being banknotes. Such features demonstrate specific properties under certain stimuli such as fluorescent patterns… read more here.
Keywords: security features; decryption covert; nanometer thick; modular metamaterials ... See more keywords